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<?php
/**
* Various HTTP related functions
*/
class Http {
static function get( $url, $timeout = 'default' ) {
return Http::request( "GET", $url, $timeout );
}
static function post( $url, $timeout = 'default' ) {
return Http::request( "POST", $url, $timeout );
}
/**
* Get the contents of a file by HTTP
*
* if $timeout is 'default', $wgHTTPTimeout is used
*/
static function request( $method, $url, $timeout = 'default' ) {
global $wgHTTPTimeout, $wgHTTPProxy, $wgVersion, $wgTitle;
wfDebug( __METHOD__ . ": $method $url\n" );
# Use curl if available
if ( function_exists( 'curl_init' ) ) {
$c = curl_init( $url );
if ( self::isLocalURL( $url ) ) {
curl_setopt( $c, CURLOPT_PROXY, 'localhost:80' );
} else if ($wgHTTPProxy) {
curl_setopt($c, CURLOPT_PROXY, $wgHTTPProxy);
}
if ( $timeout == 'default' ) {
$timeout = $wgHTTPTimeout;
}
curl_setopt( $c, CURLOPT_TIMEOUT, $timeout );
curl_setopt( $c, CURLOPT_USERAGENT, "MediaWiki/$wgVersion" );
if ( $method == 'POST' )
curl_setopt( $c, CURLOPT_POST, true );
else
curl_setopt( $c, CURLOPT_CUSTOMREQUEST, $method );
# Set the referer to $wgTitle, even in command-line mode
# This is useful for interwiki transclusion, where the foreign
# server wants to know what the referring page is.
# $_SERVER['REQUEST_URI'] gives a less reliable indication of the
# referring page.
if ( is_object( $wgTitle ) ) {
curl_setopt( $c, CURLOPT_REFERER, $wgTitle->getFullURL() );
}
ob_start();
curl_exec( $c );
$text = ob_get_contents();
ob_end_clean();
# Don't return the text of error messages, return false on error
if ( curl_getinfo( $c, CURLINFO_HTTP_CODE ) != 200 ) {
$text = false;
}
# Don't return truncated output
if ( curl_errno( $c ) != CURLE_OK ) {
$text = false;
}
curl_close( $c );
} else {
# Otherwise use file_get_contents...
# This may take 3 minutes to time out, and doesn't have local fetch capabilities
global $wgVersion;
$headers = array( "User-Agent: MediaWiki/$wgVersion" );
if( strcasecmp( $method, 'post' ) == 0 ) {
// Required for HTTP 1.0 POSTs
$headers[] = "Content-Length: 0";
}
$opts = array(
'http' => array(
'method' => $method,
'header' => implode( "\r\n", $headers ) ) );
$ctx = stream_context_create($opts);
$url_fopen = ini_set( 'allow_url_fopen', 1 );
$text = file_get_contents( $url, false, $ctx );
ini_set( 'allow_url_fopen', $url_fopen );
}
return $text;
}
/**
* Check if the URL can be served by localhost
*/
static function isLocalURL( $url ) {
global $wgCommandLineMode, $wgConf;
if ( $wgCommandLineMode ) {
return false;
}
// Extract host part
$matches = array();
if ( preg_match( '!^http://([\w.-]+)[/:].*$!', $url, $matches ) ) {
$host = $matches[1];
// Split up dotwise
$domainParts = explode( '.', $host );
// Check if this domain or any superdomain is listed in $wgConf as a local virtual host
$domainParts = array_reverse( $domainParts );
for ( $i = 0; $i < count( $domainParts ); $i++ ) {
$domainPart = $domainParts[$i];
if ( $i == 0 ) {
$domain = $domainPart;
} else {
$domain = $domainPart . '.' . $domain;
}
if ( $wgConf->isLocalVHost( $domain ) ) {
return true;
}
}
}
return false;
}
}
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